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Summary: Methods

# ViewTreeObserver.OnGlobalFocusChangeListener

`public static interface ViewTreeObserver.OnGlobalFocusChangeListener`
``

android.view.ViewTreeObserver.OnGlobalFocusChangeListener

Known indirect subclasses WebView
WebView | A View that displays web pages.

Interface definition for a callback to be invoked when the focus state within the view tree changes.

## Summary

### Public methods
`abstract void` | `onGlobalFocusChanged(View oldFocus, View newFocus)` Callback method to be invoked when the focus changes in the view tree.

## Public methods

### onGlobalFocusChanged

    public abstract void onGlobalFocusChanged (View oldFocus,
                    View newFocus)

Callback method to be invoked when the focus changes in the view tree. When the view tree transitions from touch mode to non-touch mode, oldFocus is null. When the view tree transitions from non-touch mode to touch mode, newFocus is null. When focus changes in non-touch mode (without transition from or to touch mode) either oldFocus or newFocus can be null.

Parameters
`oldFocus` | `View`: The previously focused view, if any.
`newFocus` | `View`: The newly focused View, if any.

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